The scene opens with a flashback to the first time we saw the two of them together. It's been a long time since we've seen them together, and we're pretty sure that's why they're so excited to see each other again. This time, it's all about the collar, which is supposed to protect them from the outside world, but it also lets them know that they've been having sex with each other for a long, long time. We're not sure what that means, but we do know that it means that the two are having sex, and that the sex has been going on for a very long time now. We also know that the scene is set in the middle of the night, which means that there's a lot of darkness in the background.